Vaccine-injector.



No. 834,261. PATENTBD 00T. so, 1906;

G. s. CHAMBERS.

VACGINE INJEGTOR.

APPLIOATION FILED H3A. 199e.

im uzz" f ATIORNEYS TNI Noll" Plrln d.. 'Allman'. n. c.

UNITED sTATns gPATENT orrron.

CLARENCE S; CHAMBERS; OF SIDNEY, 'NEBRASKA'.l

VACCINE-INJECTOR- Specification of Letters Patent.

Patented Oct. .30, 1906. s

'Application filed April 4, 1906. Serial No. 309,919. -1

ToaZZ whom it may concern:

' Be it known that I, CLARENCE S. CHAM- BERS, a citizen of the United States, residing at Sidney, in the county of Cheyenne and State of Nebraska, have invented a new and tures-of construction and combinations-of parts, which will be hereinafter more fully described, and pointed out in the claims.

In the-accompanying drawings -is shown the preferred form of the invention.

In said drawings, Figure 1 is a longitudinal sectionthrough the device and showing the parts in their normal positions. Fig. 2-is a similar view showing the plunger projected into-the needle; and 3 3, Fig. 1.

Referring to-thewfgures by numerals of reference, 1 is a tubular body having a contracted end 2, opening `at one end'into a tubular needle ,said needle being pointed, so as to facilitate its insertion throughthe skin of an animal. A magazine 4 is disposed ulpon the body and has a `cap `5 at one end for c osing it, while its other end communicates through a passage 6 with the contracted portion 2 of the body 1. The diameter of this passage, as well as the interior diameter of the needle 3 and the contracted portion 2 of the body, is a little greater than the diameter of/pellets 7, adapted to be used in the injector. A slot S is formed in the wall of the contracted portion 2 o posite the end of passage 6, and into this s ot projects a keeper 9, formed at one end of a spring 10, which is secured longitudinally upon the-body. 'The base of the keeper nearest the body is inclined into the needle, and a uard-fiange 11 is formed around the needle c ose to the slot, so that when said needle is inserted through the skin the operation of the keeper will not be interfered with. The plunger 12 is slidably mounted in the body 1, the inner end thereof being normally dis osed in the contracted portion 2 of the bo y and adapted to be projected into the needle,l A spring 13 Fig. 3 1s a section on 'line surrounds lthe plunger and bears at l'one/end against the body. and is fastenedfat its other end to the lunger. hold one en of the tion within the contracted portion 2. knob 4 is located on the outer end ofy the plipger to facilitate its actuation.

en the plunger is in its normal position the distance between the end'thereofand theinclined face of the keeper 49 is slightly greater than the diameter of a pellet, but is not suf# This spring serves to plunger normally inpos1.

ficiently large to receive more than .one pellet l I The magazine is lled with virus pellets of theproper size, and these pellets will assume positions within thepassage 6, andthe end one will drop upon the inclined face of .the v keeper and intothe path of thefplunger. When it is desired to inject the pellet, the

needle is inserted through the skintand plunger 12 is driven forward,so as -to .come The pelletv and plunger will 'be forced against the inclined y`face Y of.

press the spring 10.

the keeper and causethe same to spring outward through thevslot 8, and the pellet will then be pushed through the needlevby the arein` this position the pellets are prevented-by the plunger plunger.' While the parts frornmoving into the body, andas soon as l the plunger is released the spring 1() returns to its normal position and the-keepermoves automatically into its longitudinal position.-

The next pellet will there ore-drop by gravit into the-space between-the keeper and# p unger andthe device is thus automatically charged for another operation. Importance is attached to the particular construction and arrangement of the keeper, because it constitutes a regulator for controlling the feed of pellets without interferi with the operation of the plunger. This Ieeper permits the injector to be held in any position Without dan er of the pellets falling through the nee le. The flange 11 prevents the skin of the animal from interfering with the operation of the keeper.

What is claimed is- 1. In a device of the character described,

the combination with a body, a needle eX- tending therefrom, and a plunger adapted to reciprocate within the body and needle of a magazine opening into the path of the plunger, an a keeper interposed between the needle and the outlet of the magazine.

2. In a device of the character described the combination with a body, a needle eX- tending therefrom and a plunger adapted to IOO IOS

IIO

reciprocate within the body and needle; of a magazine having an outlet into the path of the plunger, and a resilient keeper projecting into the body between the outlet and the needle, said keeper adapted to be" projected from the needle by the plunger.

3. In a device of the character described the combination with a body, a needle extending therefrom, and a plunger adapted to lreciprocate within the body and needle 3 of a by the plunger when the plunger is out of its normal position, and a resilient keeper pro- 'ecting into the body between the outlet and the needle, said keepervadapted to be projected from the body by the plunger.

5. The combination with a body.having a contracted portion, a needle extending there- Jfrom, and a plunger adapted to reciprocate within the body and needle; of a magazine having an outlet-passage opening into the contracted portion of the body and into the path of the plunger, said passage adapted to be closed by the plunger, and a resilient keeper pro`ecting into the contracted portion of the body between the passage and the needle, said keeper adapted to be projected Jfrom the body by the plunger.

6. The combination with a body having a contracted portion, a needle extending therefrom, and a plunger adapted to reciprocate within the body and needle; of a magazine having an outlet-passage opening into the contracted'portion of the body and into the path of the plunger, said passage adapted to be closed by the plunger, and a resilient keeper pro'ecting into the contracted portion of the body between the passage and the needle, said keeper adapted to be projected from the body by the plunger, and a guard upon the needle and adjacent the keeper.

7. A device of the character described comprising a body, a needle extending therefrom, said body having a slot therein adjacent the needle, a resilient keeper extending through the slot and into the body, a plunger adapted to reciprocate within the body and needle to project the keeper from the body, and a reservoir opening into the body between the plunger and keeper.

8. A device of the character described comprising a body, a needle extending therefrom, said body having a slot therein adjacent the needle, a resilient keeper extending through the slot and into the body, a plunger adapted to reciprocate within the body and needle to project the keeper from the body, and a reservoir opening into the body between the plunger and keeper, the outlet of said reservoir adapted to be closed by the plunger when the keeper is projected.

9. A device ofthe character described comprising a body, a needle extending therefrom, a keeper, means for projecting pellets into and through the needle, said means adapted to remove the keeper from the path of' the pellet, and means for feeding pellets successively between the keeper and the projecting means.

In testimony that I claim the foregoing as my own I have hereto aixed my signature in the presence of' two witnesses.

CLARENCE S. CHAMBERS.

Witnesses:

J. A. F. WOLF, C. P. CHAMBERS. 

